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The American atomic program takes shape While engaged in one war in Europe and another in the Pacific, the United States would launch the largest scientific effort undertaken to that time. It would involve 37 installations throughout the country, more than a dozen university laboratories, and 100,000 people, including the Nobel Prize-winning physicists Arthur Holly Compton, Enrico Fermi, Richard Feynman, Ernest Lawrence, and Harold Urey. Get a Britannica Premium subscription and gain access to exclusive content. Subscribe Now The first contact between the scientific community and the U.S. government regarding atomic research was made by George B. Pegram of Columbia University. Pegram arranged a conference between Fermi and officers of the U.S. Navy in March 1939. In July Leo Szilard and Eugene Wigner conferred with Einstein, and the three later went to New York to meet with National Recovery Administration economist Alexander Sachs. Supported by a letter from Einstein, Sachs app

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